xref: /openbmc/linux/sound/pci/hda/hda_local.h (revision caa80275)
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Universal Interface for Intel High Definition Audio Codec
4  *
5  * Local helper functions
6  *
7  * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
8  */
9 
10 #ifndef __SOUND_HDA_LOCAL_H
11 #define __SOUND_HDA_LOCAL_H
12 
13 /* We abuse kcontrol_new.subdev field to pass the NID corresponding to
14  * the given new control.  If id.subdev has a bit flag HDA_SUBDEV_NID_FLAG,
15  * snd_hda_ctl_add() takes the lower-bit subdev value as a valid NID.
16  *
17  * Note that the subdevice field is cleared again before the real registration
18  * in snd_hda_ctl_add(), so that this value won't appear in the outside.
19  */
20 #define HDA_SUBDEV_NID_FLAG	(1U << 31)
21 #define HDA_SUBDEV_AMP_FLAG	(1U << 30)
22 
23 /*
24  * for mixer controls
25  */
26 #define HDA_COMPOSE_AMP_VAL_OFS(nid,chs,idx,dir,ofs)		\
27 	((nid) | ((chs)<<16) | ((dir)<<18) | ((idx)<<19) | ((ofs)<<23))
28 #define HDA_AMP_VAL_MIN_MUTE (1<<29)
29 #define HDA_COMPOSE_AMP_VAL(nid,chs,idx,dir) \
30 	HDA_COMPOSE_AMP_VAL_OFS(nid, chs, idx, dir, 0)
31 /* mono volume with index (index=0,1,...) (channel=1,2) */
32 #define HDA_CODEC_VOLUME_MONO_IDX(xname, xcidx, nid, channel, xindex, dir, flags) \
33 	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xcidx,  \
34 	  .subdevice = HDA_SUBDEV_AMP_FLAG, \
35 	  .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | \
36 	  	    SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
37 	  	    SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK, \
38 	  .info = snd_hda_mixer_amp_volume_info, \
39 	  .get = snd_hda_mixer_amp_volume_get, \
40 	  .put = snd_hda_mixer_amp_volume_put, \
41 	  .tlv = { .c = snd_hda_mixer_amp_tlv },		\
42 	  .private_value = HDA_COMPOSE_AMP_VAL(nid, channel, xindex, dir) | flags }
43 /* stereo volume with index */
44 #define HDA_CODEC_VOLUME_IDX(xname, xcidx, nid, xindex, direction) \
45 	HDA_CODEC_VOLUME_MONO_IDX(xname, xcidx, nid, 3, xindex, direction, 0)
46 /* mono volume */
47 #define HDA_CODEC_VOLUME_MONO(xname, nid, channel, xindex, direction) \
48 	HDA_CODEC_VOLUME_MONO_IDX(xname, 0, nid, channel, xindex, direction, 0)
49 /* stereo volume */
50 #define HDA_CODEC_VOLUME(xname, nid, xindex, direction) \
51 	HDA_CODEC_VOLUME_MONO(xname, nid, 3, xindex, direction)
52 /* stereo volume with min=mute */
53 #define HDA_CODEC_VOLUME_MIN_MUTE(xname, nid, xindex, direction) \
54 	HDA_CODEC_VOLUME_MONO_IDX(xname, 0, nid, 3, xindex, direction, \
55 				  HDA_AMP_VAL_MIN_MUTE)
56 /* mono mute switch with index (index=0,1,...) (channel=1,2) */
57 #define HDA_CODEC_MUTE_MONO_IDX(xname, xcidx, nid, channel, xindex, direction) \
58 	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xcidx, \
59 	  .subdevice = HDA_SUBDEV_AMP_FLAG, \
60 	  .info = snd_hda_mixer_amp_switch_info, \
61 	  .get = snd_hda_mixer_amp_switch_get, \
62 	  .put = snd_hda_mixer_amp_switch_put, \
63 	  .private_value = HDA_COMPOSE_AMP_VAL(nid, channel, xindex, direction) }
64 /* stereo mute switch with index */
65 #define HDA_CODEC_MUTE_IDX(xname, xcidx, nid, xindex, direction) \
66 	HDA_CODEC_MUTE_MONO_IDX(xname, xcidx, nid, 3, xindex, direction)
67 /* mono mute switch */
68 #define HDA_CODEC_MUTE_MONO(xname, nid, channel, xindex, direction) \
69 	HDA_CODEC_MUTE_MONO_IDX(xname, 0, nid, channel, xindex, direction)
70 /* stereo mute switch */
71 #define HDA_CODEC_MUTE(xname, nid, xindex, direction) \
72 	HDA_CODEC_MUTE_MONO(xname, nid, 3, xindex, direction)
73 #ifdef CONFIG_SND_HDA_INPUT_BEEP
74 /* special beep mono mute switch with index (index=0,1,...) (channel=1,2) */
75 #define HDA_CODEC_MUTE_BEEP_MONO_IDX(xname, xcidx, nid, channel, xindex, direction) \
76 	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xcidx, \
77 	  .subdevice = HDA_SUBDEV_AMP_FLAG, \
78 	  .info = snd_hda_mixer_amp_switch_info, \
79 	  .get = snd_hda_mixer_amp_switch_get_beep, \
80 	  .put = snd_hda_mixer_amp_switch_put_beep, \
81 	  .private_value = HDA_COMPOSE_AMP_VAL(nid, channel, xindex, direction) }
82 #else
83 /* no digital beep - just the standard one */
84 #define HDA_CODEC_MUTE_BEEP_MONO_IDX(xname, xcidx, nid, ch, xidx, dir) \
85 	HDA_CODEC_MUTE_MONO_IDX(xname, xcidx, nid, ch, xidx, dir)
86 #endif /* CONFIG_SND_HDA_INPUT_BEEP */
87 /* special beep mono mute switch */
88 #define HDA_CODEC_MUTE_BEEP_MONO(xname, nid, channel, xindex, direction) \
89 	HDA_CODEC_MUTE_BEEP_MONO_IDX(xname, 0, nid, channel, xindex, direction)
90 /* special beep stereo mute switch */
91 #define HDA_CODEC_MUTE_BEEP(xname, nid, xindex, direction) \
92 	HDA_CODEC_MUTE_BEEP_MONO(xname, nid, 3, xindex, direction)
93 
94 extern const char *snd_hda_pcm_type_name[];
95 
96 int snd_hda_mixer_amp_volume_info(struct snd_kcontrol *kcontrol,
97 				  struct snd_ctl_elem_info *uinfo);
98 int snd_hda_mixer_amp_volume_get(struct snd_kcontrol *kcontrol,
99 				 struct snd_ctl_elem_value *ucontrol);
100 int snd_hda_mixer_amp_volume_put(struct snd_kcontrol *kcontrol,
101 				 struct snd_ctl_elem_value *ucontrol);
102 int snd_hda_mixer_amp_tlv(struct snd_kcontrol *kcontrol, int op_flag,
103 			  unsigned int size, unsigned int __user *_tlv);
104 int snd_hda_mixer_amp_switch_info(struct snd_kcontrol *kcontrol,
105 				  struct snd_ctl_elem_info *uinfo);
106 int snd_hda_mixer_amp_switch_get(struct snd_kcontrol *kcontrol,
107 				 struct snd_ctl_elem_value *ucontrol);
108 int snd_hda_mixer_amp_switch_put(struct snd_kcontrol *kcontrol,
109 				 struct snd_ctl_elem_value *ucontrol);
110 #ifdef CONFIG_SND_HDA_INPUT_BEEP
111 int snd_hda_mixer_amp_switch_get_beep(struct snd_kcontrol *kcontrol,
112 				      struct snd_ctl_elem_value *ucontrol);
113 int snd_hda_mixer_amp_switch_put_beep(struct snd_kcontrol *kcontrol,
114 				      struct snd_ctl_elem_value *ucontrol);
115 #endif
116 /* lowlevel accessor with caching; use carefully */
117 #define snd_hda_codec_amp_read(codec, nid, ch, dir, idx) \
118 	snd_hdac_regmap_get_amp(&(codec)->core, nid, ch, dir, idx)
119 int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid,
120 			     int ch, int dir, int idx, int mask, int val);
121 int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid,
122 			     int direction, int idx, int mask, int val);
123 int snd_hda_codec_amp_init(struct hda_codec *codec, hda_nid_t nid, int ch,
124 			   int direction, int idx, int mask, int val);
125 int snd_hda_codec_amp_init_stereo(struct hda_codec *codec, hda_nid_t nid,
126 				  int dir, int idx, int mask, int val);
127 void snd_hda_set_vmaster_tlv(struct hda_codec *codec, hda_nid_t nid, int dir,
128 			     unsigned int *tlv);
129 struct snd_kcontrol *snd_hda_find_mixer_ctl(struct hda_codec *codec,
130 					    const char *name);
131 int __snd_hda_add_vmaster(struct hda_codec *codec, char *name,
132 			  unsigned int *tlv, const char * const *followers,
133 			  const char *suffix, bool init_follower_vol,
134 			  unsigned int access, struct snd_kcontrol **ctl_ret);
135 #define snd_hda_add_vmaster(codec, name, tlv, followers, suffix, access) \
136 	__snd_hda_add_vmaster(codec, name, tlv, followers, suffix, true, access, NULL)
137 int snd_hda_codec_reset(struct hda_codec *codec);
138 void snd_hda_codec_register(struct hda_codec *codec);
139 void snd_hda_codec_cleanup_for_unbind(struct hda_codec *codec);
140 
141 #define snd_hda_regmap_sync(codec)	snd_hdac_regmap_sync(&(codec)->core)
142 
143 struct hda_vmaster_mute_hook {
144 	/* below two fields must be filled by the caller of
145 	 * snd_hda_add_vmaster_hook() beforehand
146 	 */
147 	struct snd_kcontrol *sw_kctl;
148 	void (*hook)(void *, int);
149 	/* below are initialized automatically */
150 	struct hda_codec *codec;
151 };
152 
153 int snd_hda_add_vmaster_hook(struct hda_codec *codec,
154 			     struct hda_vmaster_mute_hook *hook);
155 void snd_hda_sync_vmaster_hook(struct hda_vmaster_mute_hook *hook);
156 
157 /* amp value bits */
158 #define HDA_AMP_MUTE	0x80
159 #define HDA_AMP_UNMUTE	0x00
160 #define HDA_AMP_VOLMASK	0x7f
161 
162 /*
163  * SPDIF I/O
164  */
165 int snd_hda_create_dig_out_ctls(struct hda_codec *codec,
166 				hda_nid_t associated_nid,
167 				hda_nid_t cvt_nid, int type);
168 #define snd_hda_create_spdif_out_ctls(codec, anid, cnid) \
169 	snd_hda_create_dig_out_ctls(codec, anid, cnid, HDA_PCM_TYPE_SPDIF)
170 int snd_hda_create_spdif_in_ctls(struct hda_codec *codec, hda_nid_t nid);
171 
172 /*
173  * input MUX helper
174  */
175 #define HDA_MAX_NUM_INPUTS	36
176 struct hda_input_mux_item {
177 	char label[32];
178 	unsigned int index;
179 };
180 struct hda_input_mux {
181 	unsigned int num_items;
182 	struct hda_input_mux_item items[HDA_MAX_NUM_INPUTS];
183 };
184 
185 int snd_hda_input_mux_info(const struct hda_input_mux *imux,
186 			   struct snd_ctl_elem_info *uinfo);
187 int snd_hda_input_mux_put(struct hda_codec *codec,
188 			  const struct hda_input_mux *imux,
189 			  struct snd_ctl_elem_value *ucontrol, hda_nid_t nid,
190 			  unsigned int *cur_val);
191 int snd_hda_add_imux_item(struct hda_codec *codec,
192 			  struct hda_input_mux *imux, const char *label,
193 			  int index, int *type_idx);
194 
195 /*
196  * Multi-channel / digital-out PCM helper
197  */
198 
199 enum { HDA_FRONT, HDA_REAR, HDA_CLFE, HDA_SIDE }; /* index for dac_nidx */
200 enum { HDA_DIG_NONE, HDA_DIG_EXCLUSIVE, HDA_DIG_ANALOG_DUP }; /* dig_out_used */
201 
202 #define HDA_MAX_OUTS	5
203 
204 struct hda_multi_out {
205 	int num_dacs;		/* # of DACs, must be more than 1 */
206 	const hda_nid_t *dac_nids;	/* DAC list */
207 	hda_nid_t hp_nid;	/* optional DAC for HP, 0 when not exists */
208 	hda_nid_t hp_out_nid[HDA_MAX_OUTS];	/* DACs for multiple HPs */
209 	hda_nid_t extra_out_nid[HDA_MAX_OUTS];	/* other (e.g. speaker) DACs */
210 	hda_nid_t dig_out_nid;	/* digital out audio widget */
211 	const hda_nid_t *follower_dig_outs;
212 	int max_channels;	/* currently supported analog channels */
213 	int dig_out_used;	/* current usage of digital out (HDA_DIG_XXX) */
214 	int no_share_stream;	/* don't share a stream with multiple pins */
215 	int share_spdif;	/* share SPDIF pin */
216 	/* PCM information for both analog and SPDIF DACs */
217 	unsigned int analog_rates;
218 	unsigned int analog_maxbps;
219 	u64 analog_formats;
220 	unsigned int spdif_rates;
221 	unsigned int spdif_maxbps;
222 	u64 spdif_formats;
223 };
224 
225 int snd_hda_create_spdif_share_sw(struct hda_codec *codec,
226 				  struct hda_multi_out *mout);
227 int snd_hda_multi_out_dig_open(struct hda_codec *codec,
228 			       struct hda_multi_out *mout);
229 int snd_hda_multi_out_dig_close(struct hda_codec *codec,
230 				struct hda_multi_out *mout);
231 int snd_hda_multi_out_dig_prepare(struct hda_codec *codec,
232 				  struct hda_multi_out *mout,
233 				  unsigned int stream_tag,
234 				  unsigned int format,
235 				  struct snd_pcm_substream *substream);
236 int snd_hda_multi_out_dig_cleanup(struct hda_codec *codec,
237 				  struct hda_multi_out *mout);
238 int snd_hda_multi_out_analog_open(struct hda_codec *codec,
239 				  struct hda_multi_out *mout,
240 				  struct snd_pcm_substream *substream,
241 				  struct hda_pcm_stream *hinfo);
242 int snd_hda_multi_out_analog_prepare(struct hda_codec *codec,
243 				     struct hda_multi_out *mout,
244 				     unsigned int stream_tag,
245 				     unsigned int format,
246 				     struct snd_pcm_substream *substream);
247 int snd_hda_multi_out_analog_cleanup(struct hda_codec *codec,
248 				     struct hda_multi_out *mout);
249 
250 /*
251  * generic proc interface
252  */
253 #ifdef CONFIG_SND_PROC_FS
254 int snd_hda_codec_proc_new(struct hda_codec *codec);
255 #else
256 static inline int snd_hda_codec_proc_new(struct hda_codec *codec) { return 0; }
257 #endif
258 
259 #define SND_PRINT_BITS_ADVISED_BUFSIZE	16
260 void snd_print_pcm_bits(int pcm, char *buf, int buflen);
261 
262 /*
263  * Misc
264  */
265 int snd_hda_add_new_ctls(struct hda_codec *codec,
266 			 const struct snd_kcontrol_new *knew);
267 
268 /*
269  * Fix-up pin default configurations and add default verbs
270  */
271 
272 struct hda_pintbl {
273 	hda_nid_t nid;
274 	u32 val;
275 };
276 
277 struct hda_model_fixup {
278 	const int id;
279 	const char *name;
280 };
281 
282 struct hda_fixup {
283 	int type;
284 	bool chained:1;		/* call the chained fixup(s) after this */
285 	bool chained_before:1;	/* call the chained fixup(s) before this */
286 	int chain_id;
287 	union {
288 		const struct hda_pintbl *pins;
289 		const struct hda_verb *verbs;
290 		void (*func)(struct hda_codec *codec,
291 			     const struct hda_fixup *fix,
292 			     int action);
293 	} v;
294 };
295 
296 struct snd_hda_pin_quirk {
297 	unsigned int codec;             /* Codec vendor/device ID */
298 	unsigned short subvendor;	/* PCI subvendor ID */
299 	const struct hda_pintbl *pins;  /* list of matching pins */
300 #ifdef CONFIG_SND_DEBUG_VERBOSE
301 	const char *name;
302 #endif
303 	int value;			/* quirk value */
304 };
305 
306 #ifdef CONFIG_SND_DEBUG_VERBOSE
307 
308 #define SND_HDA_PIN_QUIRK(_codec, _subvendor, _name, _value, _pins...) \
309 	{ .codec = _codec,\
310 	  .subvendor = _subvendor,\
311 	  .name = _name,\
312 	  .value = _value,\
313 	  .pins = (const struct hda_pintbl[]) { _pins, {0, 0}} \
314 	}
315 #else
316 
317 #define SND_HDA_PIN_QUIRK(_codec, _subvendor, _name, _value, _pins...) \
318 	{ .codec = _codec,\
319 	  .subvendor = _subvendor,\
320 	  .value = _value,\
321 	  .pins = (const struct hda_pintbl[]) { _pins, {0, 0}} \
322 	}
323 
324 #endif
325 
326 #define HDA_FIXUP_ID_NOT_SET -1
327 #define HDA_FIXUP_ID_NO_FIXUP -2
328 
329 /* fixup types */
330 enum {
331 	HDA_FIXUP_INVALID,
332 	HDA_FIXUP_PINS,
333 	HDA_FIXUP_VERBS,
334 	HDA_FIXUP_FUNC,
335 	HDA_FIXUP_PINCTLS,
336 };
337 
338 /* fixup action definitions */
339 enum {
340 	HDA_FIXUP_ACT_PRE_PROBE,
341 	HDA_FIXUP_ACT_PROBE,
342 	HDA_FIXUP_ACT_INIT,
343 	HDA_FIXUP_ACT_BUILD,
344 	HDA_FIXUP_ACT_FREE,
345 };
346 
347 int snd_hda_add_verbs(struct hda_codec *codec, const struct hda_verb *list);
348 void snd_hda_apply_verbs(struct hda_codec *codec);
349 void snd_hda_apply_pincfgs(struct hda_codec *codec,
350 			   const struct hda_pintbl *cfg);
351 void snd_hda_apply_fixup(struct hda_codec *codec, int action);
352 void snd_hda_pick_fixup(struct hda_codec *codec,
353 			const struct hda_model_fixup *models,
354 			const struct snd_pci_quirk *quirk,
355 			const struct hda_fixup *fixlist);
356 void snd_hda_pick_pin_fixup(struct hda_codec *codec,
357 			    const struct snd_hda_pin_quirk *pin_quirk,
358 			    const struct hda_fixup *fixlist,
359 			    bool match_all_pins);
360 
361 /* helper macros to retrieve pin default-config values */
362 #define get_defcfg_connect(cfg) \
363 	((cfg & AC_DEFCFG_PORT_CONN) >> AC_DEFCFG_PORT_CONN_SHIFT)
364 #define get_defcfg_association(cfg) \
365 	((cfg & AC_DEFCFG_DEF_ASSOC) >> AC_DEFCFG_ASSOC_SHIFT)
366 #define get_defcfg_location(cfg) \
367 	((cfg & AC_DEFCFG_LOCATION) >> AC_DEFCFG_LOCATION_SHIFT)
368 #define get_defcfg_sequence(cfg) \
369 	(cfg & AC_DEFCFG_SEQUENCE)
370 #define get_defcfg_device(cfg) \
371 	((cfg & AC_DEFCFG_DEVICE) >> AC_DEFCFG_DEVICE_SHIFT)
372 #define get_defcfg_misc(cfg) \
373 	((cfg & AC_DEFCFG_MISC) >> AC_DEFCFG_MISC_SHIFT)
374 
375 /* amp values */
376 #define AMP_IN_MUTE(idx)	(0x7080 | ((idx)<<8))
377 #define AMP_IN_UNMUTE(idx)	(0x7000 | ((idx)<<8))
378 #define AMP_OUT_MUTE		0xb080
379 #define AMP_OUT_UNMUTE		0xb000
380 #define AMP_OUT_ZERO		0xb000
381 /* pinctl values */
382 #define PIN_IN			(AC_PINCTL_IN_EN)
383 #define PIN_VREFHIZ		(AC_PINCTL_IN_EN | AC_PINCTL_VREF_HIZ)
384 #define PIN_VREF50		(AC_PINCTL_IN_EN | AC_PINCTL_VREF_50)
385 #define PIN_VREFGRD		(AC_PINCTL_IN_EN | AC_PINCTL_VREF_GRD)
386 #define PIN_VREF80		(AC_PINCTL_IN_EN | AC_PINCTL_VREF_80)
387 #define PIN_VREF100		(AC_PINCTL_IN_EN | AC_PINCTL_VREF_100)
388 #define PIN_OUT			(AC_PINCTL_OUT_EN)
389 #define PIN_HP			(AC_PINCTL_OUT_EN | AC_PINCTL_HP_EN)
390 #define PIN_HP_AMP		(AC_PINCTL_HP_EN)
391 
392 unsigned int snd_hda_get_default_vref(struct hda_codec *codec, hda_nid_t pin);
393 unsigned int snd_hda_correct_pin_ctl(struct hda_codec *codec,
394 				     hda_nid_t pin, unsigned int val);
395 int _snd_hda_set_pin_ctl(struct hda_codec *codec, hda_nid_t pin,
396 			 unsigned int val, bool cached);
397 
398 /**
399  * _snd_hda_set_pin_ctl - Set a pin-control value safely
400  * @codec: the codec instance
401  * @pin: the pin NID to set the control
402  * @val: the pin-control value (AC_PINCTL_* bits)
403  *
404  * This function sets the pin-control value to the given pin, but
405  * filters out the invalid pin-control bits when the pin has no such
406  * capabilities.  For example, when PIN_HP is passed but the pin has no
407  * HP-drive capability, the HP bit is omitted.
408  *
409  * The function doesn't check the input VREF capability bits, though.
410  * Use snd_hda_get_default_vref() to guess the right value.
411  * Also, this function is only for analog pins, not for HDMI pins.
412  */
413 static inline int
414 snd_hda_set_pin_ctl(struct hda_codec *codec, hda_nid_t pin, unsigned int val)
415 {
416 	return _snd_hda_set_pin_ctl(codec, pin, val, false);
417 }
418 
419 /**
420  * snd_hda_set_pin_ctl_cache - Set a pin-control value safely
421  * @codec: the codec instance
422  * @pin: the pin NID to set the control
423  * @val: the pin-control value (AC_PINCTL_* bits)
424  *
425  * Just like snd_hda_set_pin_ctl() but write to cache as well.
426  */
427 static inline int
428 snd_hda_set_pin_ctl_cache(struct hda_codec *codec, hda_nid_t pin,
429 			  unsigned int val)
430 {
431 	return _snd_hda_set_pin_ctl(codec, pin, val, true);
432 }
433 
434 int snd_hda_codec_get_pin_target(struct hda_codec *codec, hda_nid_t nid);
435 int snd_hda_codec_set_pin_target(struct hda_codec *codec, hda_nid_t nid,
436 				 unsigned int val);
437 
438 #define for_each_hda_codec_node(nid, codec) \
439 	for ((nid) = (codec)->core.start_nid; (nid) < (codec)->core.end_nid; (nid)++)
440 
441 /*
442  * get widget capabilities
443  */
444 static inline u32 get_wcaps(struct hda_codec *codec, hda_nid_t nid)
445 {
446 	if (nid < codec->core.start_nid ||
447 	    nid >= codec->core.start_nid + codec->core.num_nodes)
448 		return 0;
449 	return codec->wcaps[nid - codec->core.start_nid];
450 }
451 
452 /* get the widget type from widget capability bits */
453 static inline int get_wcaps_type(unsigned int wcaps)
454 {
455 	if (!wcaps)
456 		return -1; /* invalid type */
457 	return (wcaps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;
458 }
459 
460 static inline unsigned int get_wcaps_channels(u32 wcaps)
461 {
462 	unsigned int chans;
463 
464 	chans = (wcaps & AC_WCAP_CHAN_CNT_EXT) >> 13;
465 	chans = ((chans << 1) | 1) + 1;
466 
467 	return chans;
468 }
469 
470 static inline void snd_hda_override_wcaps(struct hda_codec *codec,
471 					  hda_nid_t nid, u32 val)
472 {
473 	if (nid >= codec->core.start_nid &&
474 	    nid < codec->core.start_nid + codec->core.num_nodes)
475 		codec->wcaps[nid - codec->core.start_nid] = val;
476 }
477 
478 u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction);
479 int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir,
480 			      unsigned int caps);
481 /**
482  * snd_hda_query_pin_caps - Query PIN capabilities
483  * @codec: the HD-auio codec
484  * @nid: the NID to query
485  *
486  * Query PIN capabilities for the given widget.
487  * Returns the obtained capability bits.
488  *
489  * When cap bits have been already read, this doesn't read again but
490  * returns the cached value.
491  */
492 static inline u32
493 snd_hda_query_pin_caps(struct hda_codec *codec, hda_nid_t nid)
494 {
495 	return snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
496 
497 }
498 
499 /**
500  * snd_hda_override_pin_caps - Override the pin capabilities
501  * @codec: the CODEC
502  * @nid: the NID to override
503  * @caps: the capability bits to set
504  *
505  * Override the cached PIN capabilitiy bits value by the given one.
506  *
507  * Returns zero if successful or a negative error code.
508  */
509 static inline int
510 snd_hda_override_pin_caps(struct hda_codec *codec, hda_nid_t nid,
511 			  unsigned int caps)
512 {
513 	return snd_hdac_override_parm(&codec->core, nid, AC_PAR_PIN_CAP, caps);
514 }
515 
516 bool snd_hda_check_amp_caps(struct hda_codec *codec, hda_nid_t nid,
517 			   int dir, unsigned int bits);
518 
519 #define nid_has_mute(codec, nid, dir) \
520 	snd_hda_check_amp_caps(codec, nid, dir, (AC_AMPCAP_MUTE | AC_AMPCAP_MIN_MUTE))
521 #define nid_has_volume(codec, nid, dir) \
522 	snd_hda_check_amp_caps(codec, nid, dir, AC_AMPCAP_NUM_STEPS)
523 
524 
525 /* flags for hda_nid_item */
526 #define HDA_NID_ITEM_AMP	(1<<0)
527 
528 struct hda_nid_item {
529 	struct snd_kcontrol *kctl;
530 	unsigned int index;
531 	hda_nid_t nid;
532 	unsigned short flags;
533 };
534 
535 int snd_hda_ctl_add(struct hda_codec *codec, hda_nid_t nid,
536 		    struct snd_kcontrol *kctl);
537 int snd_hda_add_nid(struct hda_codec *codec, struct snd_kcontrol *kctl,
538 		    unsigned int index, hda_nid_t nid);
539 void snd_hda_ctls_clear(struct hda_codec *codec);
540 
541 /*
542  * hwdep interface
543  */
544 #ifdef CONFIG_SND_HDA_HWDEP
545 int snd_hda_create_hwdep(struct hda_codec *codec);
546 #else
547 static inline int snd_hda_create_hwdep(struct hda_codec *codec) { return 0; }
548 #endif
549 
550 void snd_hda_sysfs_init(struct hda_codec *codec);
551 void snd_hda_sysfs_clear(struct hda_codec *codec);
552 
553 extern const struct attribute_group *snd_hda_dev_attr_groups[];
554 
555 #ifdef CONFIG_SND_HDA_RECONFIG
556 const char *snd_hda_get_hint(struct hda_codec *codec, const char *key);
557 int snd_hda_get_bool_hint(struct hda_codec *codec, const char *key);
558 int snd_hda_get_int_hint(struct hda_codec *codec, const char *key, int *valp);
559 #else
560 static inline
561 const char *snd_hda_get_hint(struct hda_codec *codec, const char *key)
562 {
563 	return NULL;
564 }
565 
566 static inline
567 int snd_hda_get_bool_hint(struct hda_codec *codec, const char *key)
568 {
569 	return -ENOENT;
570 }
571 
572 static inline
573 int snd_hda_get_int_hint(struct hda_codec *codec, const char *key, int *valp)
574 {
575 	return -ENOENT;
576 }
577 #endif
578 
579 /*
580  * power-management
581  */
582 
583 void snd_hda_schedule_power_save(struct hda_codec *codec);
584 
585 struct hda_amp_list {
586 	hda_nid_t nid;
587 	unsigned char dir;
588 	unsigned char idx;
589 };
590 
591 struct hda_loopback_check {
592 	const struct hda_amp_list *amplist;
593 	int power_on;
594 };
595 
596 int snd_hda_check_amp_list_power(struct hda_codec *codec,
597 				 struct hda_loopback_check *check,
598 				 hda_nid_t nid);
599 
600 /* check whether the actual power state matches with the target state */
601 static inline bool
602 snd_hda_check_power_state(struct hda_codec *codec, hda_nid_t nid,
603 			  unsigned int target_state)
604 {
605 	return snd_hdac_check_power_state(&codec->core, nid, target_state);
606 }
607 
608 static inline unsigned int snd_hda_sync_power_state(struct hda_codec *codec,
609 						    hda_nid_t nid,
610 						    unsigned int target_state)
611 {
612 	return snd_hdac_sync_power_state(&codec->core, nid, target_state);
613 }
614 unsigned int snd_hda_codec_eapd_power_filter(struct hda_codec *codec,
615 					     hda_nid_t nid,
616 					     unsigned int power_state);
617 
618 void snd_hda_codec_shutdown(struct hda_codec *codec);
619 
620 /*
621  * AMP control callbacks
622  */
623 /* retrieve parameters from private_value */
624 #define get_amp_nid_(pv)	((pv) & 0xffff)
625 #define get_amp_nid(kc)		get_amp_nid_((kc)->private_value)
626 #define get_amp_channels(kc)	(((kc)->private_value >> 16) & 0x3)
627 #define get_amp_direction_(pv)	(((pv) >> 18) & 0x1)
628 #define get_amp_direction(kc)	get_amp_direction_((kc)->private_value)
629 #define get_amp_index_(pv)	(((pv) >> 19) & 0xf)
630 #define get_amp_index(kc)	get_amp_index_((kc)->private_value)
631 #define get_amp_offset(kc)	(((kc)->private_value >> 23) & 0x3f)
632 #define get_amp_min_mute(kc)	(((kc)->private_value >> 29) & 0x1)
633 
634 /*
635  * enum control helper
636  */
637 int snd_hda_enum_helper_info(struct snd_kcontrol *kcontrol,
638 			     struct snd_ctl_elem_info *uinfo,
639 			     int num_items, const char * const *texts);
640 #define snd_hda_enum_bool_helper_info(kcontrol, uinfo) \
641 	snd_hda_enum_helper_info(kcontrol, uinfo, 0, NULL)
642 
643 /*
644  * CEA Short Audio Descriptor data
645  */
646 struct cea_sad {
647 	int	channels;
648 	int	format;		/* (format == 0) indicates invalid SAD */
649 	int	rates;
650 	int	sample_bits;	/* for LPCM */
651 	int	max_bitrate;	/* for AC3...ATRAC */
652 	int	profile;	/* for WMAPRO */
653 };
654 
655 #define ELD_FIXED_BYTES	20
656 #define ELD_MAX_SIZE    256
657 #define ELD_MAX_MNL	16
658 #define ELD_MAX_SAD	16
659 
660 /*
661  * ELD: EDID Like Data
662  */
663 struct parsed_hdmi_eld {
664 	/*
665 	 * all fields will be cleared before updating ELD
666 	 */
667 	int	baseline_len;
668 	int	eld_ver;
669 	int	cea_edid_ver;
670 	char	monitor_name[ELD_MAX_MNL + 1];
671 	int	manufacture_id;
672 	int	product_id;
673 	u64	port_id;
674 	int	support_hdcp;
675 	int	support_ai;
676 	int	conn_type;
677 	int	aud_synch_delay;
678 	int	spk_alloc;
679 	int	sad_count;
680 	struct cea_sad sad[ELD_MAX_SAD];
681 };
682 
683 struct hdmi_eld {
684 	bool	monitor_present;
685 	bool	eld_valid;
686 	int	eld_size;
687 	char    eld_buffer[ELD_MAX_SIZE];
688 	struct parsed_hdmi_eld info;
689 };
690 
691 int snd_hdmi_get_eld_size(struct hda_codec *codec, hda_nid_t nid);
692 int snd_hdmi_get_eld(struct hda_codec *codec, hda_nid_t nid,
693 		     unsigned char *buf, int *eld_size);
694 int snd_hdmi_parse_eld(struct hda_codec *codec, struct parsed_hdmi_eld *e,
695 		       const unsigned char *buf, int size);
696 void snd_hdmi_show_eld(struct hda_codec *codec, struct parsed_hdmi_eld *e);
697 void snd_hdmi_eld_update_pcm_info(struct parsed_hdmi_eld *e,
698 			      struct hda_pcm_stream *hinfo);
699 
700 int snd_hdmi_get_eld_ati(struct hda_codec *codec, hda_nid_t nid,
701 			 unsigned char *buf, int *eld_size,
702 			 bool rev3_or_later);
703 
704 #ifdef CONFIG_SND_PROC_FS
705 void snd_hdmi_print_eld_info(struct hdmi_eld *eld,
706 			     struct snd_info_buffer *buffer);
707 void snd_hdmi_write_eld_info(struct hdmi_eld *eld,
708 			     struct snd_info_buffer *buffer);
709 #endif
710 
711 #define SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE 80
712 void snd_print_channel_allocation(int spk_alloc, char *buf, int buflen);
713 
714 void snd_hda_codec_display_power(struct hda_codec *codec, bool enable);
715 
716 /*
717  */
718 #define codec_err(codec, fmt, args...) \
719 	dev_err(hda_codec_dev(codec), fmt, ##args)
720 #define codec_warn(codec, fmt, args...) \
721 	dev_warn(hda_codec_dev(codec), fmt, ##args)
722 #define codec_info(codec, fmt, args...) \
723 	dev_info(hda_codec_dev(codec), fmt, ##args)
724 #define codec_dbg(codec, fmt, args...) \
725 	dev_dbg(hda_codec_dev(codec), fmt, ##args)
726 
727 #endif /* __SOUND_HDA_LOCAL_H */
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